09/06/2026
Golf 6r project
New issue unlocked😂
Behavior:
1. Car starts and drives fine
2. Epc light, no acceleration response
3. Hard start then epc light and engine light
4. Cranks only no start
5. Starts and shut off on it’s own
Findings:
>High pressure fuel pump regulator no response
>Low pressure fuel regulation outside specification “intermittent
>Fuel pressure regulator valve open circuit “intermittent
>Low pressure fuel pump losing pressure currently at 1 bar
Remedy:
Not yet done with fault finding
Culprits:
1. Faulty hpfp regulator
2. Faulty water damaged ecu, wiring or module
3. Faulty new lpfp or control module